SERVICE / DETAILother

HTTP Header Checker

POST http-header-checker.underscoredone.com/check

OPEN SERVICE ↗
SONAR SCORE0.000
LIVE PRICE0.010000
BAZAAR LIVE—
CDP INDEXEDno
DECISION EVIDENCE

Why an agent can trust this route.

No recent observations
HANDSHAKE SUCCESS0.0%402 challenge reachable
PAID DELIVERY0.0%settlement observed
P90 LATENCY—recent response window
PRICE DRIFT—advertised vs observed

Sonar evidence is advisory. Paid delivery is shown as verified only when paid probes are available; otherwise route estimates use the unpaid handshake as a clearly labeled proxy.

SONAR PROBE HISTORY / 30D

Observed outcomes

JSON ↗
No probe history yet.
LIVE ENDPOINT METADATA

Sends a request to a web address you provide and reports back everything the server said in response: the status code, all the response headers, how many times it got redirected, and how long the whole thing took.

Resource: http-header-checker.underscoredone.com/check

Network: eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08

Payment methods: — · Last validation: —

{
  "input": {
    "body": {
      "url": "https://example.com",
      "method": "GET",
      "follow_redirects": true
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "url": "https://example.com",
      "headers": {
        "server": "nginx",
        "content-type": "text/html; charset=UTF-8",
        "cache-control": "max-age=600",
        "content-length": "1256"
      },
      "final_url": "https://example.com/",
      "api_version": "1.0.0",
      "status_code": 200,
      "redirect_chain": [
        {
          "url": "http://example.com",
          "status_code": 301
        }
      ],
      "response_time_ms": 214,
      "missing_security_headers": [
        "strict-transport-security",
        "content-security-policy"
      ]
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "10000"
    },
    {
      "raw": {
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b",
        "amount": "10000",
        "scheme": "exact",
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "maxTimeoutSeconds": 300
      },
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "payTo": "8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "amountAtomic": "10000"
    }
  ]
}
METADATA PROVENANCE

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.